So is the best strategy for golden hands in the later P4G dungeons just to spam light or dark attacks and hope for the best? Just can't seem to beat them before they escape anymore.
Almighty attacks work best. Get a mind charge. Whittle them down a bit with physical attacks (but not too much so they don't run away). Hit them with the almighty attack combined with mind charge and it has a good chance of taking them out. Use multiple people if you can for the almighty attacks.